D. Prepare for the Test (Fig. 501)
 S 865-156
 WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  
Do this procedure: Thrust Reverser Deactivation for Ground
 Maintenance (AMM 78-31-00/201).

 S 015-071

 (2)  
Remove the fixed upper wing panel 622BR (AMM 06-44-00/201).

 S 015-072

 (3)  
Remove the fixed lower wing panel 621AB (AMM 06-44-00/201).

 S 865-073

 (4)  
Supply electrical power (AMM 24-22-00/201).

 S 215-074

 (5)  
Make sure the ISOLATION VALVE switch-light on the P5 panel is in the OFF position.

 S 215-075

 (6)  
Make sure the WING ANTI-ICE switch-light on the P5 panel is in the OFF position.

 S 865-076
 WARNING:_______YOU MUST USE EYE AND EAR PROTECTIVE DEVICES. THE HOT AIR IN THE PRESSURIZED DUCTS CAN CAUSE INJURY TO PERSONS.
 (7)  To supply pneumatic power, hold the right pneumatic service connector open, and connect an air supply to the right pneumatic service connector (AMM 36-00-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 30-11-00
 ALL  ú ú 02 Page 518 ú Sep 20/94

A
757 MAINTENANCE MANUAL
 E. Procedure (Fig. 501, 502)
 S 485-077
 (1)  Attach the pressure gage to the fitting on the outboard end of the right TAI tee duct.
 S 865-107
 CAUTION: DO NOT OPERATE THE WING ANTI-ICE WINDOW/PROBE HEAT TEST SWITCH
_______ IN THE WING ANTI-ICE POSITION FOR MORE THAN 7 CYCLES AT AN AMBIENT TEMPERATURE OF 50°F, OR FOR MORE THAN 4 CYCLES AT AN AMBIENT TEMPERATURE OF 100°F. INTERPOLATE OR EXTRAPOLATE FOR AMBIENT TEMPERATURES INSIDE OR OUTSIDE OF THIS RANGE TO OBTAIN THE MAXIMUM NUMBER OF CYCLES. DAMAGE TO THE LEADING EDGE PANELS CAN OCCUR IF THE WING ANTI-ICE TEST SWITCH IS OPERATED FOR MORE THAN THE SPECIFIED NUMBER OF CYCLES.
 (2)  
Hold the WING ANTI-ICE WINDOW/PROBE HEAT test switch on the right sidewall panel, P61, in the WING ANTI-ICE position. Start the operation of timing device at the same time.

 S 215-079

 (3)  
Make sure the R VALVE light on the P5 panel comes on, and R WING ANTI-ICE shows on the EICAS display.

 NOTE: The EICAS message shows in 2 to 3 seconds.
____
 S 215-080
 (4)  
Make sure the pressure gage shows 13-30 psig.
　
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